What is a martial arts bully?

You do not need to be mean to teach someone to defend themselves or to instruct martial arts.  If classes seem harsh or abusive and involve physical fitness “punishments” that don’t seem to have anything to do with techniques or martial skill, that might signal a concern.  If an instructor seems mean spirited in heavily focused on physically abusing or verbally berating their students, they are likely using bullying as a tool to create physical fitness (at the expense of martial content) or they are – in fact – a bully.